Table 3 The structure and the performance statistics prediction.
Metal | Model | Scenario | Input | R2 | RMSE |
|---|---|---|---|---|---|
As | BPNN | BPNN1 | Fe, Flow, pH, WT, DO | 0.550 | 0.383 |
BPNN2 | Fe, pH, DO | 0.415 | 0.376 | ||
BPNN3 | Fe | 0.442 | 0.163 | ||
NARX | NARX1 | Fe, Flow, pH, WT, DO | 0.537 | 0.512 | |
NARX2 | Fe, pH, DO | 0.468 | 0.499 | ||
NARX3 | Fe | 0.279 | 0.255 | ||
WNN | WNN1 | Fe, Flow, pH, WT, DO | 0.122 | 0.279 | |
WNN2 | Fe, pH, DO | 0.101 | 0.026 | ||
WNN3 | Fe | 0.439 | 0.178 | ||
WNARX | WNARX1 | Fe, Flow, pH, WT, DO | 0.321 | 0.475 | |
WNARX2 | Fe, pH, DO | 0.631 | 0.300 | ||
WNARX3 | Fe | 0.335 | 0.278 | ||
Pb | BPNN | BPNN4 | Fe, Flow, pH, NO3–N, EC | 0.703 | 1.290 |
BPNN5 | Fe, Flow | 0.666 | 0.807 | ||
BPNN6 | Fe | 0.632 | 0.794 | ||
NARX | NARX4 | Fe, Flow, pH, NO3–N, EC | 0.621 | 1.006 | |
NARX5 | Fe, Flow | 0.622 | 0.919 | ||
NARX6 | Fe | 0.611 | 0.777 | ||
WNN | WNN4 | Fe, Flow, pH, NO3–N, EC | 0.648 | 0.764 | |
WNN5 | Fe, Flow | 0.691 | 0.714 | ||
WNN6 | Fe | 0.614 | 0.816 | ||
WNARX | WNARX4 | Fe, Flow, pH, NO3–N, EC | 0.013 | 3.306 | |
WNARX5 | Fe, Flow | 0.039 | 1.085 | ||
WNARX6 | Fe | 0.602 | 0.761 | ||
Zn | BPNN | BPNN7 | Fe, Flow, pH, NO3–N, EC | 0.780 | 6.702 |
BPNN8 | Fe, NO3–N | 0.714 | 5.033 | ||
BPNN9 | Fe | 0.632 | 3.499 | ||
NARX | NARX7 | Fe, Flow, pH, NO3–N, EC | 0.385 | 9.280 | |
NARX8 | Fe, NO3–N | 0.345 | 5.538 | ||
NARX9 | Fe | 0.575 | 4.067 | ||
WNN | WNN7 | Fe, Flow, pH, NO3–N, EC | 0.768 | 3.428 | |
WNN8 | Fe, NO3–N | 0.700 | 3.425 | ||
WNN9 | Fe | 0.613 | 2.884 | ||
WNARX | WNARX7 | Fe, Flow, pH, NO3–N, EC | 0.034 | 10.188 | |
WNARX8 | Fe, NO3–N | 0.006 | 13.727 | ||
WNARX9 | Fe | 0.637 | 3.407 |
